MOOR MANAGEMENT 391 



until some system is adopted for the proprietors taking joint action to 

 regulate the stock in good Grouse years. 



From the examples that have been given four deductions can be made : — 



(1) That it is possible by careful management to raise the permanent stock 



of Grouse on a moor, and do so without increasing the danger 

 of infection beyond the power of resistance of the individual bird. 



(2) That during the various stages or periods of development of the carry- 



ing capacity of the moor there is a corresponding limit of stock 

 which it is dangerous to come up to, and fatal to exceed. 



(3) That as far as yet ascertained the limit has not been arrived at on any 



moor beyond which a permanent increase of healthy stock is not 

 possible by improved moor management. 



(4) That, though many moors by their proximity to less well -managed 



moors, and through the difficulty of getting the stock killed in 

 a good year, immigration, abnormal seasonal conditions, etc., cannot 

 entirely escape the ravages of disease, yet there is every reason to 

 believe that the disease is both rarer, less hurtful in its incidence, 

 and quicker to pass away on the well-managed than on the badly- 

 burnt moors. 



